Refactor _GetLaunchCvdArgs func to handle decompress_kernel arg.

BUG:146996121
Test: acloud-dev create --local-image --host 1.1.1.1
      acloud-dev create --host 1.1.1.1
      acloud-dev create_cf --branch aosp-master --build-id 6051388 \
      --build-target aosp_cf_x86_phone-userdebug --multi-stage-launch

Change-Id: Idcb283418582980f060ca4bc432373fb9abb2085
1 file changed